Window-fastener.



.No. 708,067. Patented Sept. 2, i902.

L. D. PARKS.

WINDOW FASTENER, (Application filed May 15', 1902.)

UNITED STATESPATENT OFFICE.

LEONARD D. PARKS, OF GATESVILLE, TEXAS,VASSIGNOR ONE-I-IALF'TO JOHNT.POST, OF GATESVILLE, TEXAS.

WINDow-FASTENER SPECIFICATION forming part f Lettersl Patent NO.708,067, dated September 2, 1902. Application filed Mayrl, 1902. SerialNo. 107,488. (No model.)

To all whom, it may concern.- shown in Fig. 1, or to the window-casing,sol

Be it known that I, LEONARD D. PARKS, a as to bear against the sash. Byreference to citizen of the United States, residing at Gates- Figs. 2and 3 it will be seen that the device Ville, in the county of Ooryelland State. of comprises, essentially, a casing 1, consisting 55 5 Texas,have invented certain new and ruseful of a rectangular .frame elongatedvertically Improvements in Window-Fasteners; and I to receive theoperative parts of the fastener do hereby declare the following to be afull, and lock and covered at one side by a plate clear, and exactdescription ofthe invention, 2, which, for the purpose of illustration,is such as will enable others skilled in the artto broken away to showthe interior mechanism. 6o f 1o which it appertains to make and use thesame. The casing is further provided at opposite This invention relatesto window-fasteners, ends with attaching-ears 3, by means of which theobject in viewbeing to provide a com-v `the device maybe secured to thewindowsash bined automatic windowfastener and lock or frame. by means ofwhich a sliding Window-sash may `Within the casing are mounted two cams6 5 be securely held and fastened at any desired '4 and 5, the lower cambeing provided with point of elevation and locked against moveanoperating-handle 6 of suitable length, proment in either direction.jecting outward from the casing and having The combined fastener andlock hereinafter its movement in an upward direction limited describedcombines simplicity and'reliability by a stop-shoulder 18, formed on thecasing. 7o Y 2o in operation and economy in the cost of manu- Thecams 4and 5 are fulcrumed within the facture. vcasing at the point 8, and oneor both of the With the above andother objects vin view, cams may beprovided with a flat surface 9, the nature of which will more fullyappear as to give the proper clearance for enabling the Y, thedescription proceeds, the invention conshaftto be raised and loweredwithout the z 5 sists in the novel construction, combination, liabilityof the cams binding againstthe winand arrangementof parts, ashereinafter fully dow-frame. The lower caln is provided with described,illustrated, and claimed.` apin or stud 10, against which bears the freeIn'the accompanying drawings, Figure] is andvinclined end of a lspring12, which is a view in elevation of a portion of a window coiled at 13around a post or arbor 14 and eX- 8o 3o sash and frame, showingacombined fastener tended therefrom to form an arm 15, which is and lockapplied to the sash, with the casing held between the casing and a lugor shoulder of the fastener partly broken away to show 16. When the camsare in their inoperative the operation thereof. Fig.2 is an enlargedpositions, the pin or stud 10 lies above the sectional elevation of thefastener, showing plane of the fulcrum 8, so that the pressure 35 theparts in their operative positions. Fig. of the spring 12 operates tohold'the cam in 3 is a view in elevation of a portion of a winitsinoperative position, as shownfin Fig. l. dow sash and frame, showing racombined The upper cam 4 is provided with a large fastener and lock ofmodified form applied notch or cut-away portion 4a, thereby formto thesash, with the casing of the fastener ing a shoulder'4h, which isadapted to abut 9o 4o partly broken away to show the operation againstacorresponding shoulder 4C, forming thereof. Fig. 4k is an enlargedsectional eleapart of the casing, said shoulders serving vation of saidfastener, showing the parts in `to limit the movement of the cam 4 inone ditheir inoperative position. Fig. isasimilar `,rection. :By cuttingaway a portion of the view showing the position the parts assumeuppercam,as shown,thelatteris madelighter 45 when the sash is fastened.Fig. 6 is a similar at one side of the fulcrum S than-at the other, viewof another form of fastener".y so that there is always a 'tendency forthe Like reference-numerals? designate correheavier portion of the camto move downsponding parts in all`igures of the drawings. ward andoutward, which has the effect of The combined window fastener and lockbringing said cam into engagement with the 10o 5o contemplated in thisinvention may be apwindow-frame. The upper cam is, however, plied eitherto a sliding window-sash, as normally held out of engagement with thewindow frame or casin g by means of the lower cam 5, which is itselfheld normally away from the window-frame by the action of the spring 12.As the circumferences or edges of the cams are eccentric to theirfulcrums, they coperate in such manner that when the handle 6 isdepressed the upper cam is allowed to gravitate into engagement with thewindow frame or casing, and when said handle is elevated the lower camoperates against the upper cam, so as to restore the latter to itsinoperative position. It will thus be seen that but a single handle 6 isnecessary to operate both cams, and when the cams are thrown into actionthey lock the window against both upward and downward movement.

In Figs.3,4,and 5 a slightly-modified form of window-sash fastener andlock is shown, the upper cam 4 being provided witha handle 7, similar tobut preferably shorter than the handle 6 on the lower cam. Both of thecams are provided with pins or studs 10, against which presses theconvex surface of the free end of the spring 12, the spring thus actingsimultaneously on both cams. The cams are also provided with at meetingor abutting surfaces 17, which come together when the cams are in theirinoperative position and actas stop-surfaces for limiting the movementof the cams toward each other, arresting their movement at a time whenthe surfaces 9 are parallel with the window frame or casing.

It will be noted that the pins or studs '10 are arranged nearer to thestop-surfaces 17 than the fulcrums or pivots 8, so that when the camsare in the position shown in Fig. .4 the pressure of the spring 12against the studs 10 serves to hold the cams inoperative. On the otherhand, when the handles of the cams are moved away from each other thestuds 10 pass above and below the pivots 8, whereupon the spring 12 actsto hold the cams in their operative positions and in engagement with thewindow-frame. Accidental movement of the cams is thus prevented and thedevice as a whole rendered more reliable in action.

In Fig. 6 I have illustrated a simplified form of fastener in which buta single cam 19 is employed, the same being pivoted or fulcrumed at 20and having a spring 21, whichA hold the cam or cams in operativeengagement with the window frame or sash, as the case may be.

Having thus described the invention, what I claim is- 1. A combinedwindow fastener and lock, comprising a casing, a pair of cams pivotallymounted therein and provided with eccentric and cooperating meetingsurfaces, an operating-handle, and a pin or stud on one cam, and aspring having its free end bearing against said pin or stud and adaptedthereby to hold the cams either in their operative or inoperativepositions, substantially as described.

2. A combined window-sash fastener and lock, comprising a casing, a pairof cams fulcrumed therein and provided with eccentric and coperatingmeeting surfaces, and operating-handle, and a pin or stud on one cam, aspring bearing against said pin or stud and adapted to hold the cameither in its operative or inoperative position, and a stop-shoulder onthe casing, one of the cams being cut away to form a cooperatingstop-shoulder and to give the cam a preponderance of weight upon oneside of its fulcrum.

In testimony whereof I aiiix my signature in presence of two witnesses.

LEONARD D. PARKS.

Witnesses:

B. MOORE, C. M. FELLRATH.

